Question

Скоротити дроб
3а²

___

А-а²



х²--2х

____

х²-4

Answer 1

$\dfrac{3a^2}{a-a^2} = \dfrac{3a^2}{a(1-a)} = \dfrac{3a}{1-a}$

$\dfrac{x^2-2x}{x^2-4} = \dfrac{x(x-2)}{(x-2)(x+2)} = \dfrac{x}{x+2}$